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  KEY 
  AND 
  FLORA 
  

  

  I. 
  HYDROPHYLLUM 
  L. 
  

  

  Coarse 
  perennials. 
  Leaves 
  large, 
  petioled. 
  Flowers 
  white 
  

   or 
  pale 
  blue, 
  inconspicuous. 
  Calyx 
  5-parted, 
  sometimes 
  ap- 
  

   pendaged 
  at 
  the 
  notches. 
  Corolla 
  bell-shaped, 
  5-cleft, 
  with 
  

   5 
  double, 
  nectar-bearing 
  folds 
  inside. 
  Stamens 
  projecting, 
  

   the 
  filaments 
  bearded. 
  Style 
  projecting 
  ; 
  ovary 
  covered 
  with 
  

   bristly 
  hairs, 
  the 
  placentae 
  very 
  broad 
  and 
  fleshy, 
  inclosing 
  

   the 
  ovules. 
  Capsule 
  globular, 
  1-4-seeded. 
  

  

  1. 
  H. 
  macrophyllum 
  Nutt. 
  A 
  coarse, 
  rough-hairy 
  plant, 
  about 
  1 
  ft. 
  

   high, 
  from 
  scaly-toothed 
  rootstocks. 
  Leaves 
  oblong, 
  pinnate 
  and 
  pin- 
  

   nately 
  cut, 
  the 
  divisions 
  mucronate, 
  obtuse, 
  coarsely 
  toothed. 
  Flower 
  

   cluster 
  dense, 
  globular, 
  long-peduncled. 
  Flowers 
  about 
  i 
  in. 
  long. 
  

   Calyx 
  little 
  or 
  not 
  at 
  all 
  appendaged, 
  its 
  lobes 
  broad 
  at 
  the 
  base, 
  

   but 
  with 
  slender, 
  tapering 
  points. 
  Corolla 
  white. 
  Rich, 
  rocky 
  woods 
  

   W. 
  and 
  S. 
  

  

  2. 
  H. 
  virginianum 
  L. 
  Nearly 
  smooth, 
  1-2 
  ft. 
  high, 
  stem 
  often 
  fork- 
  

   ing 
  at 
  the 
  base. 
  Leaves, 
  of 
  the 
  stem 
  mostly 
  near 
  the 
  top, 
  pinnately 
  

   cut 
  into 
  5-7 
  divisions 
  ; 
  lobes 
  oval-lanceolate, 
  deeply 
  serrate, 
  the 
  

   lowest 
  ones 
  distinct; 
  petioles 
  of 
  the 
  basal 
  and 
  lower 
  leaves 
  4-8 
  in. 
  

   long. 
  Flower 
  clusters 
  on 
  peduncles 
  longer 
  than 
  the 
  petioles 
  of 
  the 
  

   upper 
  leaves, 
  from 
  the 
  axils 
  of 
  which 
  or 
  opposite 
  which 
  they 
  arise. 
  

   Flowers 
  about 
  ] 
  in. 
  long. 
  Calyx 
  not 
  appendaged, 
  its 
  lobes 
  narrowly 
  

   linear, 
  bristly-margined. 
  Corolla 
  whitish, 
  with 
  purplish 
  veins. 
  Moist 
  

   woods. 
  

  

  3. 
  H. 
  appendiculatum 
  Michx. 
  Hairy, 
  1-H 
  ft. 
  high. 
  Stem 
  leaves 
  pal- 
  

   mately 
  5-lobed, 
  the 
  lobes 
  acute, 
  toothed, 
  lowest 
  ones 
  pinnately 
  divided. 
  

   Flower 
  cluster 
  rather 
  loose. 
  Calyx 
  appendaged 
  at 
  the 
  notches. 
  Corolla 
  

   blue. 
  Stamens 
  projecting 
  from 
  the 
  corolla 
  little 
  or 
  not 
  at 
  all. 
  Moist 
  

   woods. 
  

  

  n. 
  ELLISIA 
  I,. 
  (MACROCALYX) 
  

  

  Delicate, 
  branching 
  annuals. 
  Leaves 
  pinnately 
  lobed 
  or 
  

   divided. 
  Flowers 
  small, 
  whitish. 
  Calyx 
  without 
  appendages, 
  

   5-parted, 
  enlarged 
  and 
  leafy 
  in 
  fruit. 
  Corolla 
  bell-shaped 
  or 
  

   cylindrical, 
  little 
  if 
  any 
  longer 
  than 
  the 
  calyx, 
  5-lobed, 
  with 
  

   5 
  minute 
  appendages 
  within 
  the 
  tube. 
  Placentae, 
  fruit, 
  and 
  

   seeds 
  nearly 
  as 
  in 
  Hydrophyllum. 
  

  

  1. 
  E. 
  Nyctelea 
  L. 
  Plant 
  somewhat 
  rough 
  ish-hairy, 
  6-12 
  in. 
  high. 
  

   Leaves 
  pinnately 
  parted 
  or 
  divided. 
  Peduncles 
  1-flowered, 
  opposite 
  

   the 
  leaves. 
  Corolla 
  whitish. 
  Pod 
  globose, 
  finally 
  pendulous. 
  In 
  damp, 
  

   shady 
  places. 
  

  

  